scholarly journals Kontaminasi Residu Pestisida Organoposfat: Klorpirifos, Fenitrotion dan Profenofos dalam Bivalvia yang Ditangkap di Pesisir Utara Pulau Jawa

2019 ◽  
Vol 22 (2) ◽  
pp. 103
Author(s):  
Chrisna Adhi Suryono ◽  
Agus Sabdono ◽  
Subagiyo Subagiyo
Keyword(s):  
Pesticide Residues ◽  
Aquatic Environment ◽  
North Coast ◽  
Organophosphate Pesticides ◽  
Test Results ◽  
Organophosphate Pesticide ◽  
Anova Test ◽  
Significant Difference ◽  
Seawater Samples

Organophosphate pesticides were widely used in agriculture and OPP which was less accumulative and degradable but It has been found in an aquatic environment. The purpose of this study was to determine the level of organophosphate pesticide residues in bivalve which was fishing in North Coast of Java specifically the Demak and Surabaya.  Bivalvia, sediment and seawater samples were analysed using GC-MS. The results showed that the bivalves of A inaequivalvis, P viridis, A pectinata captured in Demak and Surabaya were contaminated with organophosphate pesticide of chlorpyrifos, fenitrothion and profenofos. The chlorpyrifos was found in all species of bivalves, but the highest concentrations of OPP were profenophos> chlorpyrifos > fenitrothion respectively. ANOVA test results show that there was a very significant difference in OPP residues in bivalves p = 0.009, but there was no difference in OPP residues between locations.Organoposfat pestisida (OPP) banyak digunakan secara meluas dalam pertanian dan OPP tersebut kurang akumulatif dan mudah terurai namun keberdaanya telah di temukan dala lingkungan perairan. Tujuan dari penelitian adalah untuk mengetahui tingkat akumulasi residu pestisida organoposfat yang terdapat di bivalvia yang ditangkap di pesisir Utara Jawa khususnya wilayah Demak dan Surabaya.  Sampel bivalvia, sedimen dan air laut dianalisa menggunakan GC-MS. Hasil penelitian menunjukan bahwa bivalvia A inaequivalvis, P viridis, A pectinata yang ditangkap di Demak dan Surabaya terkontaminasi pestisida organoposfat jenis Klorpirifos, Fenitrotion dan Profenofos. Klorpirifos ditemukan pada semua bivalvia, namun konsentrasi tertinggi OPP secara berurutan profenofos > klorpirifos > fenitrotion.  Hasil uji ANOVA  menunjukan adanya perbedaan yang sangat nyata residu OPP dalam bivalvia p= 0.009,  namun tidak ada berbedaan residu OPP antar wilayah lokasi.

scholarly journals Kontaminasi Residu Pestisida Organofosfat di Dalam Tanaman Holtikultura

2020 ◽  
Vol 4 (2) ◽  
pp. 98-110
Author(s):  
Widia Purnamasari ◽  
Moch Irfan Hadi ◽  
Eva Agustina
Keyword(s):  
Systematic Review ◽  
Pesticide Residues ◽  
Research Method ◽  
Large Scale ◽  
Organophosphate Pesticides ◽  
Pesticide Use ◽  
Organophosphate Pesticide ◽  
Maximum Residue Limit ◽  
Horticultural Crops ◽  
Risk Of Exposure

Excessive use of organophosphate pesticides is becoming more common these days. This can affect the level of pesticide residues in farmers' crops. Excessive spraying of pesticides can result in environmental pollution both small and large scale. If excessive exposure to these pesticides can cause damage to the ecosystem. The purpose of this study was to determine the level of organophosphate pesticide residues found in horticulture plants. This research method is a systematic review, by analyzing various studies regarding the contamination of organophosphate pesticide residues in horticultural crops. There are 20 studies from within the country. The results obtained in the form of levels of pesticide residues that are still below the threshold of the BMR (Maximum Residue Limit) of pesticides determined by SNI. Two other studies show that no pesticide residue content was detected. Conclusion: This shows that the sample tested is still safe for consumption. Socialization and education about the doses of pesticide use and how to reduce levels of pesticides in horticultural crops are needed to reduce the risk of exposure to pesticides

scholarly journals METODE PENGUKURAN ASUPAN PANAS KOMPOR GAS BERDASARKAN SNI 7638:2011 DAN SNI 7469:2013

2016 ◽  
Vol 17 (3) ◽  
pp. 233
Author(s):  
Nanang Kusnandar
Keyword(s):  
Significant Influence ◽  
Confidence Level ◽  
Heat Input ◽  
Experimental Measurements ◽  
Test Results ◽  
Anova Test ◽  
Whitney Test ◽  
Significant Difference ◽  
Input Pressure ◽  
Test Result

<p>Abstrak<br />Salah satu klausul uji dalam SNI kompor gas dengan sistem pemantik ialah pengukuran asupan panas. Dalam makalah ini, eksperimen pengukuran asupan panas pada suatu kompor gas dua tungku dilakukan dengan memvariasikan tekanan input dan lama waktu pengujian untuk melihat pengaruhnya terhadap nilai asupan panas yang dihitung berdasarkan formula dalam SNI 7368:2011 dan SNI 7469:2013. Hasil uji ANOVA pada tingkat keyakinan 95% menunjukkan bahwa terdapat pengaruh yang signifikan dari tekanan input gas pada saat pengujian terhadap asupan panas kompor yang dihasilkan, sedangkan lama waktu pengujian tidak berpengaruh signifikan. Selain itu, dengan uji Mann-Whitney dihasilkan bahwa tidak ada perbedaan signifikan antara nilai asupan panas kompor gas dua tungku yang diperoleh dari penjumlahan nilai asupan panas pada kedua tungku yang diuji secara terpisah dengan hasil dari kedua tungku yang diuji secara bersamaan.<br />Kata Kunci: asupan panas, kompor gas sistem pemantik, SNI 7368:2011, SNI 7469:2013.</p><p><br />Abstract<br />One clause in the SNI of gas stove with lighter system is the measurement of heat input. In this paper, experimental measurements of the heat input on a two-burner gas stove done by varying the input pressure and duration of testing to see its effect on the heat input value calculated based on a formula in SNI 7368: 2011 and SNI 7469: 2013. ANOVA test results at the 95% confidence level indicates that there is significant influence of input pressure to heat input of gas stove obtained, while the duration of the test has no significant effect. Additionally, the Mann-Whitney test result revealed that there is no significant difference between the value of the heat input of two burner gas stove obtained from the sum of the heat input in both burner that is tested separately with the result that is tested simultaneously.<br />Keywords: heat input, gas stove with lighter system, SNI 7368:2011, SNI 7469:2013.</p>

Collaborative Study of the Ethyl Acetate Extraction, Sweep Co-distillation Cleanup, and GLC Determination, Using Six Parent Organophosphate Pesticides

1968 ◽  
Vol 51 (3) ◽  
pp. 662-665 ◽  
Author(s):  
R W Storherr ◽  
R R Watts
Keyword(s):  
Ethyl Acetate ◽  
Pesticide Residues ◽  
Methyl Parathion ◽  
Collaborative Study ◽  
Organophosphate Pesticides ◽  
Organophosphate Pesticide ◽  
Specific Group

Abstract Nine chemists in five laboratories collaborated in testing the combined rapid ethyl acetate extraction and sweep co-distillation cleanup method for multiple organophosphate pesticide residues in crops. Pesticides were detected by GLC with the potassium thermionic detector. The six pesticides studied were Diazinon, methyl parathion, malathion, parathion, ethion, and carbophenothion. Six crops—kale, carrots, lettuce, apples, potatoes, and strawberries—were divided into three groups, and each laboratory was selected to work with a specific group. With unknown fortification levels of 1.0 and 0.5 ppm, the collaborators obtained recoveries of 90+% at each level.

scholarly journals Pengaruh penggunaan denture adhesive sediaan powder dan denture adhesive sediaan cream terhadap kekuatan retensi pada pemakai gigi tiruan lengkapThe effect of denture adhesive powder preparations and denture adhesive cream preparations usage on the retention strength in complete denture wearers

2020 ◽  
Vol 32 (1) ◽  
pp. 72
Author(s):  
Hafidzah Alhusna ◽  
Ariyani Dallmer
Keyword(s):  
Alveolar Bone ◽  
Complete Denture ◽  
Complete Dentures ◽  
Test Results ◽  
Denture Adhesive ◽  
Anova Test ◽  
Clinical Trial Research ◽  
Significant Difference ◽  
Push And Pull ◽  
Retention Strength

Pendahuluan: Pemakaian gigi tiruan lengkap prevalensinya lebih tinggi pada usia lanjut daripada usia muda. Perubahan fisik yang terjadi pada usia lanjut yang memakai gigi tiruan lengkap akan berpengaruh pada kualitas dan kuantitas saliva serta resorpsi tulang alveolar sehingga berkurang kekuatan retensi gigi tiruan lengkap. Denture adhesive digunakan untuk meningkatkan kekuatan retensi gigi tiruan lengkap. Tujuan penelitian ini adalah untuk menganalisis pengaruh penggunaan denture adhesive sediaan powder dan cream terhadap kekuatan retensi pada gigi tiruan lengkap. Metode: Jenis penelitian ini adalah eksperimental dengan rancangan penelitian uji klinis. Penelitian ini dilakukan pada gigi tiruan lengkap rahang atas yang telah diberikan hook dengan menggunakan alat push and pull gauge pada 10 sampel setiap kelompok dan dibagi tiga kelompok (kelompok tanpa denture adhesive, denture adhesive powder dan denture adhesive cream). Data dianalisis dengan uji ANOVA dan dilanjutkan uji LSD. Hasil: Hasil uji statistik ANOVA menunjukkan adanya pengaruh penggunaan denture adhesive powder dan denture adhesive cream terhadap kekuatan retensi (p = 0,0001, <0,05). Hasil uji LSD menunjukkan adanya perbedaan pengaruh penggunaan denture adhesive sediaan powder dan cream terhadap kekuatan retensi, terlihat perbedaan yang signifikan antara kelompok Tanpa Denture Adhesive dengan Denture Adhesive Powder dan Denture Adhesive Cream, tetapi tidak signifikan antara denture adhesive powder dan denture adhesive cream. Simpulan: Kekuatan retensi pada denture adhesive sediaan cream lebih tinggi dibandingkan denture adhesive sediaan powder sehingga penggunaan denture adhesive sediaan cream lebih direkomendasikan pada pasien yang membutuhkan denture adhesive.Kata kunci: Retensi, gigi tiruan lengkap, denture adhesive. ABSTRACTIntroduction: The use of complete denture is more commonly found in elderly than the younger age. Physical changes that occur in elderly complete denture wearers will affect the quality and quantity of saliva and alveolar bone resorption so that retention strength of complete dentures will be reduced. Denture adhesive is used to increase the retention strength of complete dentures. The purpose of this study was to analyse the effect of using denture adhesives with the various form of powder and cream on the retention strength in complete dentures. Methods: This research was experimental research with a clinical trial research design. This study was measured on the maxillary complete denture that had been hooked using the push and pulls gauges towards 10 samples of each group, then divided into three groups (no denture adhesive; denture adhesive powder; and denture adhesive cream). Data were analysed by ANOVA test then continued by LSD test. Results: Based on the ANOVA test results, the influence of the use of denture adhesive powder and denture adhesive cream on the retention strength (p = 0.0001; p < 0.05). The LSD test results showed a difference in the effect of using denture adhesive powder and cream form on the retention strength of complete denture, also, a significant difference between the group with no denture adhesive with denture adhesive powder and cream form groups. However, there was no significant difference between denture adhesive powder and cream form groups. Conclusion: The retention strength of denture adhesive cream form is higher than powder form; thus, the use of denture adhesive cream form is more recommended in patients who need a denture adhesive.Keywords: Retention, complete denture, denture adhesive.

scholarly journals POTENTIAL MICROALGA Chlorella vulgaris FOR BIOREMEDIATION OF HEAVY METAL Pb

2020 ◽  
Vol 2 (3) ◽  
pp. 224-234
Author(s):  
Asyatul Halima ◽  
Nursyirwani Nursyirwani ◽  
Irwan Effendi ◽  
Hanies Ambarsar
Keyword(s):  
Chlorella Vulgaris ◽  
Culture Media ◽  
Optical Emission ◽  
Control Treatment ◽  
Test Results ◽  
Environmental Technology ◽  
Anova Test ◽  
Significant Difference ◽  
And Control ◽  
Spectrometer Data

This research was conducted from April to July 2019 at the Center for Environmental Technology Laboratory (PTL), Geostech 820 Building, Serpong Region Puspitek, South Tangerang. The aim of this research was to determin growth of Chlorella vulgaris on media added with Pb at different concentrations, and to determine the ability to absorb Pb. The experimental method was conducted by using concentrations of Pb at 3 different levels consisting of 1 ppm, 5 ppm, 10 ppm in triplicate and control treatment without the addition of Pb. Each sample was analyzed by ICP-OES (Inductivly Coupled Plasma – Optical Emission Spectrometer). Data was analyzed by using ANOVA followed by LSD test. The growth of C. vulgaris biomass during the cultivation were Pb 1 ppm (10.38 g / l), k (9.10 g / l), Pb 5 ppm (8.36 g/l) and Pb 10 ppm (7.13) g/l). ANOVA test showed that different concentrations of Pb gave a very significant difference (Sig. <0.05) on the growth of C. vulgaris. Reduction in the concentration of Pb metal in culture media were Pb 10 ppm (96.8%), Pb 5 ppm (96.2%), Pb 1 ppm (90%) and there is no Pb found in control. ANOVA test results showed that C. vulgaris had a very significant effect (Sig. <0.05) on the decrease of Pb metal concentration. This shows that C. vulgaris has the capacity as bioremediation of Pb with different concentrations.

scholarly journals ANALYSIS OF POTENTIAL INTERACTIONS OF RAMIPRIL -AMBON BANANA (Musa paradisiaca var. sapientum (L.) Kunt.) ON HYPERKALEMIA RISK IN WHITE RATS

2021 ◽  
Vol 3 (2) ◽  
pp. 91
Author(s):  
I Gusti Ayu Sintia Dewi ◽  
Made Krisna Adi Jaya ◽  
Ni Putu Rutin Seciolini Agristy ◽  
Ida Ayu Gendari
Keyword(s):  
Drug Therapy ◽  
Serum Potassium ◽  
Potassium Level ◽  
Serum Potassium Level ◽  
Uv Spectrophotometry ◽  
Test Results ◽  
Anova Test ◽  
White Rats ◽  
Significant Difference ◽  
One Way Anova

Introduction: Drug and food interaction is a condition in which nutritional factors present in food have an influence significant effect on drug therapy, both potentially increasing or decreasing the effect of drug therapy. Indonesian people have a habit of taking medicine by using food or drink. Bananas are the primadona that are often consumed to speed up the swallowing process and reduce the bitter taste of medicine. It turns out that the consumption of bananas together with ACE inhibitors can increase the risk of hyperkalemia. Lack of information about the effects caused by drug and food interactions, so it is necessary to do related research.  Objective: This study aims to determine the interaction of giving ramipril together with Ambon banana on the risk of hyperkalemia. Methods: A real experimental study while still adhering to the Covid'19 health protocol. White rats were divided into 4 groups, conditioned by hypertension, then intervened with ramipril and Ambon banana. Blood serum was taken and analyzed using UV spectrophotometry to obtain serum potassium levels. The levels obtained were analyzed using the One Way Anova Test. Results: The mean serum potassium level of the positive control group was 4.93±0.58; negative control 4.13±0.60; normal control 4.76±0.59 and treatment 5.10±0.38. The highest serum potassium level was in the ramipril treatment group together with Ambon banana, but still in the normal range of 3.60–5.50 mmol/L. One Way Anova test results (p = 0.054). (p>0.05) showed no significant difference. Conclusion: There is no specific increase in levels of ramipril concurrently with Ambon banana so it does not have the potential to cause the risk of hyperkalemia.   Keywords: Drug Interaction, Ramipril, Ambon Banana, Serum Potassium, Hyperkalemia

A Sweep Co-distillation Cleanup Method for Organophosphate Pesticides.

1965 ◽  
Vol 48 (6) ◽  
pp. 1154-1158
Author(s):  
R W Storherr ◽  
R R Watts
Keyword(s):  
Column Chromatography ◽  
Pesticide Residues ◽  
Methyl Parathion ◽  
Organophosphate Pesticides ◽  
Organophosphate Pesticide ◽  
Distillation Method ◽  
Adsorption Column ◽  
Column Method ◽  
Better Than

Abstract A simple sweep co-distillation method which uses the Storherr tube was developed for cleanup of 2 g or less of crude crop extracts which contain organophosphate pesticide residues. Five crops (kale, carrots, apples, strawberries, and potatoes) were fortified at levels of 1.0, 0.5, and 0.1 ppm with a mixture containing Trithion, diazinon, malathion, methyl parathion, and parathion. The sweep co-distillation method was compared with the adsorption column method by use of this mixture. The range of average per cent recoveries were 89–101% and 83–96%, respectively. The cleanup required approximately 20 minutes per sample and was as good as, and in many cases better than, adsorption column chromatography. Detection of the organophosphate pesticides was performed by GLC with the thermionic detector.

Perbedaan sensitivitas tetes telinga antibiotik terhadap Pseudomonas aeruginosa pada otitis media supuratif kronik

2012 ◽  
Vol 42 (2) ◽  
Author(s):  
Anton Budhi Darmawan ◽  
Dwi Utami Anjarwati
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Otitis Media ◽  
Chronic Suppurative Otitis Media ◽  
Test Results ◽  
Sectional Study ◽  
Suppurative Otitis Media ◽  
Number Of Patients ◽  
Significant Difference ◽  
Cochran Test ◽  
Post Hoc

Background: Chronic suppurative otitis media (CSOM) is one infectious disease of the middle ear, most commonly caused by Pseudomonas aeruginosa. A high number of patients come to the ENT outpatient clinic with active benign type of CSOM. The bacteria Pseudomonas aeruginosa is capable of producing biofilm which protects itself from penetration of antibiotics, and therefore creates resistance towards antibiotics and difficult to eradicate. Objective: The aim of this study was to compare the sensitivity levels of chloramphenicol, polymyxin-neomycin, cyprofloxacin and ofloxacine against Pseudomonas aeruginosa in patients with active benign type CSOM in ENT clinic. Method: The method used was across sectional study on 25 patients, from August 2010 until December 2010. Samples were taken withear swab and then put on sensitivity test to chloramphenicol, polymyxin-neomycin, cyprofloxacin andofloxacine using the diffusion disc method. The analysis used in this study was Cochran test. Results: Results showed a significant difference in sensitivity among chloramphenicol (38,70%), polymyxinneomycin(83,87%),cyprofloxacin(90,32%)andofloxacin(58,06%)withp=0,000(p<0,05).PostHocanalysisusing the Mc Nemar indicated that there were significant differences in sensitivity betweenpolymyxin-neomycin to chloramphenicol with p=0,000 (p<0,05), ciprofloxacin to chloramphenicol andciprofloxacin to ofloxacine with p= 0,002, but there were no significant differences between cyprofloxacinto polymyxin-neomycin with p=0,687, polymyxin-neomycin to ofloxacin p=0.057 and ofloxacin tochloramphenicol p=0,109.   There were significant differences in antibiotic ear dropssensitivity to Pseudomonas aeruginosa in patients with active benign type of CSOM. Cyprofloxacin andpolymyxin-neomycin were more sensitive than ofloxacin and chloramphenicol. Keywords: Pseudomonas aeruginosa, active benign type of chronic suppurative otitis media, antibioticear drops.  Abstrak :  Latar belakang: Otitis media supuratif kronik (OMSK) merupakan penyakit infeksi kronik telinga tengah yang sering dijumpai di klinik THT. Penyebab tersering OMSK adalah bakteri Pseudomonasaeruginosa. Pseudomonas aeruginosa mempunyai kemampuan untuk membentuk biofilm yangmelindunginya dari penetrasi antibiotik sehingga menimbulkan resistensi terhadap antibiotik dan sulituntuk eradikasinya. Tujuan: Untuk mengetahui perbandingan tingkat sensitivitas kloramfenikol,polimiksin-neomisin, ciprofloksasin dan ofloksasin terhadap isolat Pseudomonas aeruginosa padapasien OMSK benigna aktif di klinik THT RSMS. Metode: Metode yang digunakan adalah crosssectional terhadap 29 pasien OMSK di klinik THT RSMS periode bulan Agustus 2010 - Desember2010. Pengambilan sampel dilakukan dengan swab telinga. Uji sensitivitas terhadap kloramfenikol,polimiksin-neomisin, ciprofloksasin dan ofloksasin dilakukan dengan metode cakram secara difusi.Analisis yang digunakan dalam penelitian ini adalah Cochran dan analisis post hoc. Hasil: Didapatkansensitivitas kloramfenikol sebesar 38,70%, polimiksin-neomisin sebesar 83,87%, ciprofloksasin sebesar90,32% dan ofloksasin sebesar 58,06% dengan p=0,01 (P<0,05), yang menunjukkan adanya perbedaansensitivitas yang bermakna antara kloramfenikol, polimiksin-neomisin, ciprofloksasin dan ofloksasinterhadap Pseudomonas aeruginosa. Analisis post hoc menggunakan Mc Nemar menunjukkan bahwaterdapat perbedaan sensitivitas yang bermakna antara tetes telinga polimiksin-neomisin terhadapkloramfenikol, dan ciprofloksasin terhadap kloramfenikol p=0,000 (p<0,05), serta terdapat perbedaanyang bermakna antara tetes telinga ciprofloksasin terhadap ofloksasin, p=0,002, tetapi tidak terdapatperbedaan yang bermakna antara ciprofloksasin terhadap polimiksin-neomisin, p=0,687, polimiksinneomisinterhadap ofloksasin p=0,057, dan kloramfenikol terhadap ofloksasin p=0,109. Kesimpulan:Terdapat perbedaan sensitivitas yang bermakna tetes telinga antibiotik terhadap Pseudomonas aeruginosa pada pasien OMSK benigna aktif. Ciprofloksasin dan polimiksin-neomisin tetes telinga mempunyai sensitivitas yang lebih baik dibanding ofloksasin dan kloramfenikol. Kata kunci: Pseudomonas aeruginosa, otitis media supuratif kronik, tetes telinga antibiotik 

Pengaruh Jumlah Pencucian Beras dengan Kadar Klorin

2017 ◽  
Vol 1 (1) ◽  
pp. 89
Author(s):  
Indah Purwaningsih ◽  
Supriyanto Supriyanto
Keyword(s):  
Mucous Membrane ◽  
Confidence Level ◽  
Iodometric Titration ◽  
Titration Method ◽  
Anova Test ◽  
Average Value ◽  
Significant Difference ◽  
The Difference

Abstract: Chlorine is a green halogen-shaped halogen gas at normal temperature and serves as bleach, stain remover and disinfectant. Chlorine is now widely used for bleaching rice so that less quality rice looks like quality rice. Chlorine is very toxic and causes mucous membrane irritation, highly reactive and very powerful oxidizer. The purpose of this research was to determine the difference of chlorine level in chlorinated rice washed once, twice and 3 times. The sample in this study amounted to 11 samples calculated by replication formula. Each sample was treated 3 times, ie 1 washed once, 2 washed twice and washed 3 times. The samples then examined by iodometric titration method. Based on the results of the study using ANOVA test, 11 samples obtained the average value of chlorine after washed once amount of 0.0176%, after washed twice amount of 0.0111%, and after washed 3 times amount of 0.0052% with the value significance p = 0.03 (p <0.05) at 95% confidence level which means there was a significant difference between chlorine levels in chlorinated rice washed once, twice and 3 times.Abstrak: Klorin merupakan unsur halogen berbentuk gas berwarna kuning kehijauan pada suhu normal danberfungsi sebagai pemutih, penghilang noda maupun desinfektan. Klorin sekarang banyak digunakan untuk bahan pemutih beras agar beras yang kurang berkualitas tampak seperti beras berkualitas. Klorin sangat toksik dan menyebabkan iritasi membran mukosa, sangat reaktif dan merupakan oksidator yang sangat kuat. Tujuan dari penelitian ini ialah untuk mengetahui perbedaan kadar klorin pada beras berklorin yang dicuci sebanyak 1 kali, 2 kali dan 3 kali. Sampel dalam penelitian ini berjumlah 11 sampel yang dihitung dengan rumus replikasi. Setiap sampel diberi perlakuan sebanyak 3 kali, yaitu 1 kali pencucian, 2 kali pencucian dan 3 kali pencucian. Sampel penelitian kemudian diperiksa dengan metode titrasi iodometri. Berdasarkan hasil penelitian menggunakan uji Anova secara komputerisasi terhadap 11 sampel diperoleh nilai rata-rata kadar klorin setelah 1 kali pencucian sebesar 0,0176 %, setelah 2 kali pencucian sebesar 0,0111 %, dan setelah 3 kali pencucian sebesar 0,0052 % dengan nilai signifkansi p = 0,03 (p<0,05) pada tingkat kepercayaan 95% yang artinya ada perbedaan yang bermakna antara kadar klorin pada beras berklorin yang dicuci sebanyak 1 kali, 2 kali dan 3 kali.

A STUDY OF CONDYLAR POSITION IN CENTRIC RELATION AND MAXIMAL INTERCUSPATION USING CONEBEAM TOMOGRAPHY

2019 ◽  
pp. 84-92
Author(s):  
Anh Chi Phan ◽  
Xuan Anh Ngoc Ho
Keyword(s):  
Dental Students ◽  
Cone Beam ◽  
Test Results ◽  
Reference Position ◽  
Centric Relation ◽  
Temporomandibular Joints ◽  
Significant Difference ◽  
Mandibular Fossa ◽  
Condylar Position ◽  
Cone Beam Tomography

Background: The condylar position discrepancy between centric relation and maximal intercuspation has been still a controversial issue. Aims: To compare the condylar position between centric relation and maximal intercuspation using cone-beam tomography in patients without temporomandibular joints disorder. Materials and methods: To assess the condylar position in centric relation and maximal intercuspation using cone-beam tomography on 40 fifth-year and sixth-year dental students of Hue University of Medicine and Pharmacy without temporomandibular joints disorder. The condylar positions are assessed following Sener classification (2009) and are compared between centric relation and maximal intercuspation using pairedsamples t-test and Mann-Whitney U-test. Results: Among 480 condye-to-fossa measurement pairs, there are 91.2% pairs having difference between two reference position but there is no significant difference. The condylar position at the superior of mandibular fossa has the greatest percentage in both centric relation and maximal intercuspation (43.8% in centric relation and 51.2% in maximal intercuspation). This greatest percentage is followed by the condylar position at posterior of mandibular fossa (32.5% in centric relation and 36.3% in maximal intercuspation). Lastly, the condylar position at the anterior of mandibular fossa has the fewest percentage (23.7% in centric relation and 12.5% in maximal intercuspation). Conclusion: There is no significant difference of condylar position between centric relation and maximal intercuspation in patients without temporomandibular joints disorder. Key words: Condylar position, centric relation, maximal intercuspation, cone-beam tomography

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